# The New Federal Calculator, Or, Scholar's Assistant: Containing the Most Concise and Accurate Rules for Performing the Operations in Common Arithmetic : Together with Numerous Examples Under Each of the Rules, Varied So as to Make Them Conformable to Almost Every Kind of Business : for the Use of Schools and Counting Houses

J. Grigg, 1830 - 180 СЕКъДЕР

### тИ КщМЕ ОИ ВЯчСТЕР -сЩМТАНГ ЙЯИТИЙчР

дЕМ ЕМТОПъСАЛЕ ЙЯИТИЙщР СТИР СУМчХЕИР ТОПОХЕСъЕР.

### пЕЯИЕВЭЛЕМА

 CONTENTS 8 Multiplication 15 Subtraction 21 Tables of Money Weights and Measures 32 Compound Multiplication 45 Compound Subtraction 54 Compound Division 60 Proportion or the Single Rule of Three 72
 Double Rule of Three 79 Tare and Tret 91 Compound Interest 98 Insurance Commission and Brokage 105 Loss and Gain 112 Exchange 118 Subtraction of Vulgar Fractions 131

### дГЛОЖИКч АПОСПэСЛАТА

сЕКъДА 126 - Now .} of f- is a compound fraction, whose value is found by multiplying the numerators together for a new numerator, and the denominators for a new denominator.
сЕКъДА 2 - District, has deposited in this office the title of a book, the right whereof he claims as proprietor, in the words following, to wit : " THE CHILD'S BOTANY," In conformity to the act of the Congress of the United States, entitled, " An act for the encouragement of learning by securing the copies of maps, charts, and books to the authors and proprietors of such copies, during the times therein mentioned...
сЕКъДА 73 - ... multiply the second and third terms together, and divide the product by the first for the answer, which will always be of the same denomination as ftie third term.
сЕКъДА 125 - To reduce a mixed number to an improper fraction, — RULE : Multiply the whole number by the denominator of the fraction, to the product add the numerator, and write the result over the denominator.
сЕКъДА 36 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints — 1 quart (qt.) 4 quarts = 1 gallon (gal.) 31| gallons = 1 barrel (bbl.) 2 barrels...
сЕКъДА 157 - Multiply the sum of the two extremes by the number of terms, and half the product will be the sum of all the terms.
сЕКъДА 132 - Reduce compound fractions to simple ones, and mixt numbers to improper fractions ; then multiply the numerators together for a new numerator, and the denominators for. a new denominator.
сЕКъДА 178 - What difference is there between the interest of 500Z. at 5 per cent, for 12 years, and the discount of the same sum at the same rate, and for the same time ? Ans.
сЕКъДА 24 - The number to be divided is called the dividend. The number by which we divide is called the divisor.
сЕКъДА 143 - If the errors are alike, divide the difference of the products by the difference of the errors, and the quotient will be the answer.